rather than "FOO_TYPE_BAR" in G_TYPE_CHECK_INSTANCE_CAST macros,
allowing large parts of libgda that were previously misparsed to
be parsed correctly
* gda/gda-api.raw: Regen
* gda/Gda.metadata: Make Gda.Value opaque, since it's mostly a
union and we're horribly butchering its layout.
svn path=/trunk/gtk-sharp/; revision=41103